Growing impatiens in Colorado can be a rewarding endeavor for both novice and experienced gardeners. These vibrant flowers are known for their ability to brighten up shady areas with their lush foliage and colorful blooms. However, the unique climate of Colorado presents some challenges to cultivating these beautiful plants. This article will guide you through the essentials of growing impatiens successfully in Colorado.
Before diving into the specifics of growing impatiens, it’s important to understand what these plants are and what they need to thrive. Impatiens are annual flowering plants that belong to the family Balsaminaceae. They are prized for their bright blooms, which come in various colors including red, pink, white, purple, and orange. Typically, they prefer shaded to partially shaded areas and can grow anywhere from 6 inches to 3 feet tall, depending on the variety.
When selecting impatiens for your garden in Colorado, it’s essential to choose varieties that are suited for the local climate. Some of the most popular varieties include:
Consider the specific conditions of your garden before making a selection. If you have areas with strong sunlight, opt for New Guinea or SunPatiens varieties.
In Colorado, where the sun can be intense, it’s crucial to choose a planting location wisely. While traditional impatiens prefer shady spots, some newer varieties can tolerate more sunlight. Aim for locations that receive partial shade, especially during the hottest parts of the day.
The soil quality is vital for the successful growth of impatiens. They thrive in well-draining soil enriched with organic matter. Conduct a soil test to determine the pH and nutrient levels. Impatiens prefer slightly acidic to neutral pH (around 6.0 to 7.0). Amend your soil with compost or peat moss if necessary to improve drainage and fertility.
Begin by clearing your chosen area of weeds and debris. This step is essential as weeds compete for nutrients and water and can harbor pests and diseases.
Once cleared, till your soil to a depth of at least 12 inches. This process aerates the soil and improves drainage. As you till, mix in organic materials such as compost or well-rotted manure to enhance soil fertility.
In Colorado, it’s generally best to plant impatiens after the last frost date, which usually falls between mid-May and early June. Check with local gardening resources or extension services for specific dates relevant to your area.
When planting impatiens, space them about 10–12 inches apart to allow sufficient air circulation and growth room. Crowding can lead to mold growth and disease.
Impatiens require consistent moisture but dislike soggy soils. In Colorado’s dry climate, regular watering is essential—aim for about an inch of water per week (including rainfall). Use soaker hoses or drip irrigation systems to provide moisture directly at the roots without wetting foliage excessively.
Fertilize impatiens every four to six weeks with a balanced liquid fertilizer (such as a 10-10-10 formula) diluted according to package instructions. Over-fertilization can lead to lush foliage but fewer flowers.
Regularly deadhead spent blooms to encourage continuous flowering throughout the growing season. Use clean scissors or shears to pinch off dead flowers just above the leaves.
While impatiens are relatively hardy plants, they can still fall victim to common pests like aphids, spider mites, and whiteflies. Regularly inspect your plants for signs of infestations.
Natural Remedies:
Impatiens are susceptible to several diseases including downy mildew—especially in humid conditions—which can be exacerbated by overcrowding or insufficient air circulation.
If you notice wilting leaves or unusual spots on your plants, act quickly by removing affected parts or treating with fungicides if necessary.
Since impatiens are annuals in most climates—including Colorado—they will not survive harsh winters. However, you can extend their blooming period into late fall by taking care of them properly throughout summer:
Growing impatiens in Colorado requires attention and care due to its unique climate and elevation challenges. By selecting suitable varieties, preparing your planting site properly, maintaining consistent watering and fertilization routines, and being vigilant about pests and diseases, you can enjoy an abundance of these beautiful blooms all summer long. With thoughtful planning and execution, your garden can become a vibrant showcase of color that thrives even under Colorado’s sunny skies!